Organ-pipe with qualifying-tube.



Wis. HASKELL. ORGAN PIPE WITH QUALIFYING TUBE.

APPLICATION E'ILED MAES. 1909.

Patented Aug. 2, 1910.

Unir-ED srarijis rirnur OFFICE.

WILLIAM E. HASKELL, OF BRATLEBOBO,

VERMONT, ASSIGNOB T0 ESTEY ORGAN COMPANY, OF BRATTLEBORO, VERMONT, A.CORPORATION OF VERMONT.

cnam-PIPE WrTH ouaLirYiNG-TUBE. 4

. Specication of Letters Patent.

Y .Patented'Aug. 2, 1910.

Application tiled larok 8, 1.909. Serial No. 482,147.

To all .wwm it may concern:

Be it known that I, WILLIAM E. HAS of Brattleboro, -in the county ofWindham and State of Vermont, have invented certain new and usefulImprovements in Organ- Pi s lVith Qualifying-Tubes, of which the folowing is a specification. 'l x The special objects of the presentimprovements are to enable pipes to be made of low pitch with lessheight than common, and to qualify the tone.

A metal organ lpe embodying the present improvements is i nsti-ated inthe accompanying drawings, whereins- Figure 1, is a longitudinal sectionof the organ pipe. Fig.v 2, is a cross-section. 3, is a longitudinalsection of the upper end of the pipe on an enlarged scale and ina planeat right angles to that of Fig. 1.

The pipe has a c lindrical body A, open at its to and its lower end maybe con` structed in any of the ways common in the construction of metalpipes. As shown, it

has a bottom B, a foot C, a mouth D, anda bridge E, as in Letters Patentof the United States No. 871,272, dated November 19, 1907. Theseillustrated features are, however, simpt v typical of'one variety ofmetal pipes.

The characteristic .feature of the present invention is the cylindricalqualifying tube F which has a closed to G, and an o )en bottom H. Thisqualifying tube is o greater diameter than the )ipe body A, andsurrounds the ipebo y and incloses the open upper end t ereof. The upperends of the body and` tube are in wmm-unication with each other. Owingto the greater diameter ofthe qualifying tube, a 'free s ace is providedbetween the tube and t e body A, which space is open at the bottom andin free communication with the Aexternal air and -which communicates atthe top with the inpadded on its upper surface, upon which',

pad the underside of the top G, rests. The

mit J, can be ad'usted on the screw I, there l by governing t e distanceof the top G, y

above the open top of the body A. A s rin K, soldered on the interior ofthe cylindrical portion of the qualifying tube bears against theexterior of the body A, and prevents any ob'eetionable movement of thequalifying tu c. Near its lower open end H, the qualifying tube isprovided with any suitable adjusting deviceI for regulating the pitch,such as a tuning slit L, and'tuner M, such as are frequently used intuning metal pipes. Certain' characteristics of this construction areimportant. The area in cross-section of the annular space between theinterior. of the qlpalifying tube and the exterior of thc body s ould beequal to the area in cross-section of the interior of the body. Theheight of the lower side of the top G, above the plane of 'the top ofthe body A, should be approximately one-third the interior diameter ofthe body A. The qualifyin tube is shown as concentric with the pipeliodyA, but this is not essential.

A pi e of this construction has a itch lower t an that of the length ofthe body A. Its pitch equal to, tha-t lof an opcn pipe of a lengthequal-to the vertical distance between the bottom B` and the top G, plusthe vertical distance between the top G, and the open bottoni H,.of thequalifying tube F, the efective opening at the bottom being determinedby the tuner M. This characteristie isimportant since it enables pipesof Wou d not admitA the employment of open pipes of the necessary lengthto give the desired low tone. The qualifying tube may be Vcarried downalmost to t-he mouth D, of the pipe, thus giving a desirable low pitchwhich could only be obtained by au open pipe of nearly double thelength. y

The qualifyinr tube of the character shown has a qua ifying Aeffectouthe character of the tone produced, it not being the same character asthat produced by that of the pipe shown if the qunlifving tube vwereremoved. 'Hence, the qualifying tube not. only lowers the pitch butvaries the character of the tone. By appropriate voicing such as shownit is feasible, for example,

net, which tone has heretofore being ro- `duced in or an pipesonly bythe emp oyment of a vi rating reed.

While the improvement is shown in con- .low itch to be employed insituations which to obtainI a tone similar to that of the clarif--ciples of construction cnn be employed in wood pipes.'

lelainin- 1. nietnl organ pipe having a cylindrh-al open top bodynnd un'open bottom qualifying tube suii'o'undingthe saine at its upper end,said qualifying tube being eylindi'u-nl in cross-section tween theinterior of the qualifying 'tube and the exterior of the body beingsubstantially equal to the internal aren of the body, and

the disianee between the top of tlie'quulifying tubo und Athe open topof the body be, ing substantially one-third .of the internal diaiiietei'of the body.

i?. A metal organ pipe having an o )en top.

body und a qua fying tube siii-mun ing the having an opening below itstop 'and a. closed flat top, the area of the space between the interiorof the ualifying tube and the ex.- tei'ior of the boily beinv'substantially equal to the intorinil uren o? distance between the top ofthe qualifying tube and the open top of the bodyr being substantiallyolie-third of the internal diam eter of the body.

3. A inetai organ pipe having an open body with a vertical screwthreaded stem euri-ying an adjustable nut, and a qualifyinir tube with aclosed to and an open botloni surrounding said bod) tui'e inits topthrough threaded stein extends, lop of the nut.

4. A metal organ pi e having;r un open top body and a surrouni ingqualifying tube with closed top tting overthe top of said lsanieat itsupper end, saldqualifying tube whereby the closed qualifying tube restsupon the the body, and Ythe y having an apeiwhich saidv screw u andhaving 'ii'j closed flat top, the area of the space be-4 ing tube vbody@einem y having a closed tint top and an opening be-A low its top, thearea of the 'space between the interior of the qualifying tube and thefxterioi of the' body being:r Siibstuntially equal :n the internal areaiof the body,

open' top of `the body.

6. An organ pipe having an open body and a qualifying'tube with a closedtop and :infopen' bottoni su'ilvrounding said'body and adj ustablsupportedrtheieon, said qualifyb'eing ot' 'greater diameter. than thebody, whereby a. free space is provided between said tube and body whichis open to the external air at the bottoni and communicats at the topwith the interior of said 7. An or an v )i e-liavino an open top bodyand suiirdi'inding tualifyin tube with closed top, said lqualifyingtube' aving n tuner at its lower open end.

8. AAn organ 4pipe having an open top body and-ii. surroundingqualifying tube with closed 'top fitting over the top of said body.,Said qualifying tube being of greater diameter than the body, whereby afree 'space is provided between said tube and bodyl which is. open tothe external air. at'

the bottom, and communicates at the with the interior4 of said body.

'In witness. whereof, I have hereunto top ysignedmy niiuie in thepresence of two subscribing jwitnesses.

' WILLIAM n. HASKELL.

Witnesses:

L. lV. HAWLEY, C, N. MonAN.

and thev qualifying tube communicating with the

